50 GREATEST SF books by Abe: Here are the criteria used. One book per author, so that was hard on the big three of science fiction – Robert Heinlein, Isaac Asimov and Arthur C Clarke, who each have multiple classic titles to their name. Attempt to show as many sub-genres of science fiction and plot themes as possible. Include early stories that influenced the genre as a whole and launched popular themes, even if those books appear a bit dated today. A well thought out list w/ explanation.
For 12 thousand years the Galactic Empire has ruled supreme. Now it is dying. But only Hari Seldon, creator of the revolutionary science of psychohistory, can see into the future -- to a dark age of ignorance, barbarism, and warfare that will last thirty thousand years. To preserve knowledge and save mankind, Seldon gathers the best minds in the Empire and brings them to a bleak planet at the edge of the Galaxy to serve as a beacon of hope for a future generations.